scsi: lpfc: Avoid unused function warnings

When building powerpc pseries_defconfig or powernv_defconfig:

drivers/scsi/lpfc/lpfc_nvmet.c:224:1: error: unused function
'lpfc_nvmet_get_ctx_for_xri' [-Werror,-Wunused-function]
drivers/scsi/lpfc/lpfc_nvmet.c:246:1: error: unused function
'lpfc_nvmet_get_ctx_for_oxid' [-Werror,-Wunused-function]

These functions are only compiled when CONFIG_NVME_TARGET_FC is enabled.
Use that same condition so there is no more warning. While the fixes commit
did not introduce these functions, it caused these warnings.

Fixes: 4064b27417a7 ("scsi: lpfc: Make some symbols static")
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

drivers/scsi/lpfc/lpfc_nvmet.c

@@ -220,6 +220,7 @@ lpfc_nvmet_cmd_template(void)
 	/* Word 12, 13, 14, 15 - is zero */
 }
 
+#if (IS_ENABLED(CONFIG_NVME_TARGET_FC))
 static struct lpfc_nvmet_rcv_ctx *
 lpfc_nvmet_get_ctx_for_xri(struct lpfc_hba *phba, u16 xri)
 {
@@ -263,6 +264,7 @@ lpfc_nvmet_get_ctx_for_oxid(struct lpfc_hba *phba, u16 oxid, u32 sid)
 
 	return NULL;
 }
+#endif
 
 static void
 lpfc_nvmet_defer_release(struct lpfc_hba *phba, struct lpfc_nvmet_rcv_ctx *ctxp)